Preposterous
Preposterous adjective - Showing or marked by a lack of good sense or judgment.
Usage example: a preposterous suggestion to go swimming in this freezing weather
Unreasonable is a synonym for preposterous in absurd topic. In some cases you can use "Unreasonable" instead an adjective "Preposterous", when it comes to topics like ridiculous, usual. popular alternative
Unreasonable
Unreasonable adjective - Having no basis in reason or fact.
Usage example: an unreasonable assumption
Preposterous is a synonym for unreasonable in usual topic. You can use "Preposterous" instead an adjective "Unreasonable", if it concerns topics such as absurd, unacceptable, not logical or sensible. popular alternative
Mutual synonyms
Related pairs
- exorbitant and preposterous
- exorbitant and unreasonable
- extravagant and preposterous
- extravagant and unreasonable
- stupid and preposterous
- stupid and unreasonable
- outrageous and preposterous
- outrageous and unreasonable
- excessive and preposterous
- excessive and unreasonable
- foolish and preposterous
- foolish and unreasonable
- irrational and preposterous
- irrational and unreasonable
Cite this Source
Unreasonable and Preposterous. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/preposterous/unreasonable
Preposterous & Unreasonable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/preposterous/unreasonable>.
Unreasonable or Preposterous. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/preposterous/unreasonable.
Google Ngram Viewer shows how "preposterous" and "unreasonable" have occurred on timeline